Developer shares refined MCP server rules that make Claude Code tools actually work

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A developer has documented a streamlined setup of four MCP servers across two machines after more than a year of testing Claude Code integrations. On a work laptop, Context7 supplies up-to-date library documentation to prevent Claude from relying on outdated training data, while CodeGraph uses tree-sitter to map code structure and call relationships. Specific rules in a global CLAUDE.md file govern when and how each tool is invoked, including when to stop querying and how to report failures. A Mac mini setup adds Discord bot functionality and a Chrome extension for browser-based tasks, though a browser automation MCP was dropped due to persistent session instability. The developer concludes that the real value of MCP lies not in the connections themselves but in the precise rules that define tool usage, preventing redundant or silent fallbacks.

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